Henry m



H; M. SHEER AIR BLAST BURNER Fiied Jan, e. 1923 Nov. 2 1926.

Patented Not. 2, 1926. p

UNITED STATES 1,605,789 PATENT OFFICE.

HENRY ML SHEER, OF QITINCY, ILLINOIS, ASSIGNOB TO B. M. SHEER COMPANY,01'

v QUINCY, ILLINOIS, A CORPORATION OF ILLINOIS.

AIR-BLAST BURNER.

Application filed January 6, 1923. Serial No. 611,048.

My invention relates to an improvement in air blast burners. A

In.this particular invention, I have succeeded in producing perfectcombustion a with a wide range of flame adjustment, the

flame being white instead of red and smoky as is the case with otherburners of this type. Furthermore, I get a uniform and unvaryingpressure of oil against the valve. II

new burner are an improved burner bowl, in connection with a multiplejet gas .generator in the center thereof, together-with the central airnozzle. r

In the accompanying drawings:-

Fig. 1 is a view in elevation, and partly in section; Y

Fig. 2 is a perspective view' of the air nozzle; v v N Fig. 3 is anenlarged section through 'the gas generator;

Fig. 4'is a plan view of the valve dial and pointer. A, represents anair nozzle which includes a spider 1, cast from metal, and a down draftair pipe 2,-the lower end ofwhich is held frictionally in the centralbody portion of the spider. k

The numeral 3 represents the burner bowl 39 upon the upper edge of whichthe spider l rests. K The burner bowl is in the form of a cylinder, withan upturned edge'4,-and having .a bottom 5 which slopes toward thecenter and up to the generator.

Ordinarily, the bottom ofthe burner bdwl' of this type slopes away. fromthe center and the object seems to be to-vaporize the I 'oil as it flowsdown the slope, and then burn 40 it about midway between the center andthe edge of thebowl; but. in this way. thev enerator does not convertthe oil into gas efore it is deliveredto .the bowl. After the oil in amy burner becomes generated, no raw oil, or even oil vapor, is to beseen. The oil is converted into a" dry gas which passes throu h thesmall holes 6 .of the generator 7, an the incoming air through t A fromthe 150 row in Fig. 1 discharges so as to rive this gas directly down tothe bottom of the burner bowl. At this point ignition takes place, and,by the time this gas reaches the- The principal features included inthis e nozzleipe 2 (as indicated the ar-.

The down-draft pipe 2 is preferably made ofheavy sheet steel, and thispipe must be enough larger in diameter than the opening 8 in the bottomof the air nozzle A to prevent friction or resistance to the air passingdown through the pipe or tube 2.

While this pipe or tube is illustrated as passing straight down throughthe top of the stove into the burner, its construction and position canbe modified to meet the 66 requirements of stoves or furnaces where anopening throughthe top cannot be ar-' ranged. For instance, this tubecan be provided with an elbow, so it will pass through the front,doorofa furnace or stove. The 7 door openin would have to be closed, ofcourse, 50 t at all air must pass down through the pipe or tube 2.

Referring to the generator, the lower end of the draft nozzle must beplaced the proper distance from the bottom of the burner below, and thegenerator must enter the lower end of the draft nozzle, so the smalljets are about one-fourth inch above thebottom of the nozzle.

The generator is vertically adjustable for this purpose through thescrew-threads 9' and 10. vWhen thus adjusted, the incoming air carriesthe gas down with it, and forces 11, on which is fastened a dial 12 andpoint-- I er 13, so that the .proper position of the valve can always bedetermined. 1

'The action of his burner is the same when placedin a coal-burning stoveas when placed in an oil-stove. A uniform and un- 96 varying pressure ofoil against the valve is necessary,-and this may be provided in variousways, as forv instance by means of a float (not shown) in' the tank asfully set forth in patents already granted to me and 100 applicationsstill pending.

- I claim 1. An air blastburner incl-uding a burner bowl having asubstantially concave bottom with the center portion thereof slopingupward toward the center, a generator mounted upon said center port onat the top of the upwardl sloping sides, the sides of said generator ingin alignment with and terminating in the sides o and gener- 0.

ator, and an air'pipe extending downward over the generator and havingthe discharge end thereof terminating below and in close proximity tothe discharge point of said enerator, the sides of said air pipe slopmgtoward the discharge point of said generator.

2. An air blast burner including a burner bowl, a generator mountedsubstantially at the center thereof, and having a discharge pointadjacent the top, said burner bowl having a substantially concave bottomwith ator, an air supply pipe extending downward toward said generator,and an air nozzle supported upon said burnerbowl and receiving the lowerend of said air pipe. said nozzle having thelower discharge end thereofterminating below and in close proximity to the discharge point of saidgenerator, and being tapered toward the generator for discharging theair tOWEL ld the discharge point thereof at the centerof the burnerbowl.

In testimony whereof ture, r HENRY M.

